Gas burner



F. DRusElKls Oct. 18, 1960 GAS BURNER V2 Sheets-Sheet 1 Filed May 7, 1958 Hfs Arron/ln S Oct. 18, 1960 F. DRusElKls 2,956,622

GAS BURNER Filed May 7, 1958 2 snee's-sheqtl 2 INVENTOR.

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United States GAS BURNER Frederick Druseikis, Rochester, N.Y., assignor to General Motors Corporation, Detroit, Mich., a corporation of Delaware Filed May 7, 1958, Ser. No. 733,637

`1 Claim. (Cl. '15S-99) This invention pertains to burners and especially to gas burners for home heating.

To burn fuel eiciently, it is desir-able to provide the optimum primary and secondary air supply in the proper proportions with the proper relationship at the proper location.

It is an object of this invention to provide a quiet, e'icient, inexpensive burner adequate in capacity for home furnaces formed primarily of stacked plates arranged to provide complete combustion with minimum of excess air and smoke.

This and other objects are attained in the forms shown in the drawings in which a series of plates having aligned central openings provided with flanges extruded alternately in opposite directions and nested together are located at the end of the Venturi tube conveying the fuel and primary air supply. The plates also have six aligned holes evenly distributed around their central iianged openings also provided with anges extruded alternately in opposite directions and nested together. The nested anges of the rst series of central openings and the nested anges of the six openings are arranged in alternate spaces between the plates. The primary tube carrying the combustible mixture is surrounded by a secondary air tube supported by a mounting flange bolted to the front wall of the furnace with the inlet of the primary tube and secondary tube located outside and their outlets as well as the stacked plates being located within the combustion chamber in the furnace. The mounting ilange is provided with a series of twelve equally spaced air flow holes surrounding the secondary tube to prevent noise.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings wherein preferred embodiments of the present invention are clearly shown.

In the drawings:

Figure l is a vertical sectional view, partly diagrammatic, of a gas burner embodying one form of my invention within a furnace;

Figure 2 is an exploded sectional view showing the arrangement of the stacked plates of the burner; and

Figure 3 is a view, in elevation, of one of the stacked plates.

Referring now to the drawings and more particularly to Fig. l, there is shown within the combustion chambei 20 of indeterminate size, a series of circular vertically arranged stacked plates 22 consisting primarily of two alternating series of plates `designated by the reference characters 24 and 26.

As better shown in Fig. 2, the plates 24 each have a central anged aperture provided with an integral narrow ange 28 extruded to the right. Surrounding the opening, each of the plates 24 have a series of six uniformly distributed openings 30 each having a flange extruded to the left. Each of the plates 26, on the other hand, has a central anged opening with its integral nar- 2,956,622 Patented Oct. 18, 196.0

row flange 32 extruded to the left just slightly larger than the lianges 28 for the central openings in the plates 24 so that they will nest as shown in Fig. 1. Each of the plates 26 also has a series of six equally spaced openings 34 concentric with and surrounding the opening formed by ange 32 and arranged on a circle of the same `diameter as the openings 30 in the plate 24. The ilanges for the openings 34 are extruded to the right and are just slightly smaller than the flanges Ifor the opening 30 of the plates 24 so that they will nest as illustrated in Fig. 1.

One of the plates 24 and one of the plates 26 may have their anges 28 and 32 nested together to constitute a pair. These pairs then may be stacked together with the anges of the openings 30 and 34 nesting together to provide an array of stacked plates, as shown in Fig. l. The nesting may be accomplished by having press-tits between the iianges, or the flanges may be secured together by some suitable form of brazing such as copper brazing, yas the plates are of steel. The nesting of the flanges 28 and 32 and the nesting of the flanges of the openings 30 and 34 vassure uniform spacing of the plates. They are arranged alternately so that between each pair :of plates in which the flanges 28 and 32 are nested, there are spaces extending from the series of central openings provided by the anges 28 and 32 to the peripheries of the plates. These spaces in communication with the series of central openings formed by the flanges 28 and 32 contain the nested flanges of the openings 30 and 34 so as to exclude these spaces from communication with the openings 30 and 34. The alternate set of spaces between said pairs contain the nested ilanges 28 and 32 so that the series o f openings 30 and 34 have no communication with the series of openings formed yby the flanges 28 and 32.

Referring now more particularly to Fig. 1, there is provided at one end of the series of stacked plates 24 and 26 a closure plate 36 having a central portion 38 recessed to the left and fitting within the flange 28 of the adjacent opening of the adjacent plate 24. At the opposite end of the series of stacked plates 24 and 26 there is provided a connector plate 40 having a series of six apertures 42 aligned with the six apertures 30 and 34 in the plates 24 and 26 and having flanges extruded to the right to nest with the adjacent lianges of the apertures 30 of the adjacent plate 24. This plate 40 also has a central opening provided with la flange 44 extruded to the left to t over the adjacent end of the primary or Venturi tube 46.

The Opposite end of the Venturi tube 46 is provided with a bell-shaped ange portion `48 which is bonded to the disc 50 having -a rearwardly extending flange. This rearwardly extending flange is connected to the front end of the secondary air tube 52 extending from the disc 50 into the combustion chamber 20 adjacent to the stacked plates 22. This secondary air tube 52 is provided with a series of four large secondary inlet air openings 54 between the disc 50 and the front wall 56 of the furnace. The disc 50 is provided with a transverse supporting `strip 58 having a central opening supporting the fuel supply spud 60 which may be for natural, artificial or liquid petroleum gas. This disc 50 and the strip 58 support a rotatable slotted disc `62. 'Ihe disc 50 has a central opening also supporting the spud 60 and apertures which may register with the apertures or slots in the rotatable disc 62. The disc 62 may -be rotated to vary the amount of registration of the openings to control the primary air supply, as is customary.

The secondary tube 52 has bonded to it the inner flange 66 of a anged mounting ring 64. Its outwardly extending ange is bolted by a series of bolts 68 to the front wall 56 of the furnace. To secure quiet operation of the burner, there are provided, between the ange 66 and the circle of the bolts 68 of the ring 64, a series of twelve evenly distributed air flow holes 70 which act to make the burner quiet in operation.

In operation, as the gas issues from the spud 60, primary air Will be drawn in through the registering openings in the discs 62 and 50 and flow into the central openings formed by the flanges 28 and 32. After reaching this point, the combustible mixture will flow radially between the alternate spaces containing the nested anges of the openings 30 and 34 to the peripheries of the plates. The gas will burn at the peripheries of the plates. Secondary air has free access to the six openings provided by the'series of openings 30 and 34 and can liow outwardly to the peripheries ofthe plates in the spaces having the nested flanges 28 and 32. This provides an arrangement wherein the primary mixture ilows outwardly and burns at the periphery of each alternate space While the secondary air likewise ows outwardly to the peripheries of the other set of alternate spaces. This provides an arrangement wherein substantially complete combustion can be obtained with a minimum of excess air without smoking.

While the embodiments of the present invention as herein disclosed constitute preferred forms, it is to be understood that other forms might be adopted.

What is claimed is as follows:

In combination, a horizontal gas burner for a combustion chamber, including a plurality of pairs of sheet metal plates, each of said pairs arranged in a vertical plane and having a anged central opening in axial alignment with the other openings of the other pairs, each of said central openings being formed by a pair of anges, one ange on each plate in said pair extending toward a mating ange on the other plate and intertitting in nested relationship therewith, each pair of plates having additional anged openings connecting with corresponding flanged openings in adjacent pairs for holding the pairs of plates in spaced relation to provide a path for the radial ow of a combustible mixture between adjacent pairs of plates, said additional flanged openings being located eccentrically relative to the irst mentioned flanged central openings, said additional anged openings also being open to the ow of secondary air for radial iiow between the plates of each pair, a generally horizontal gas supply Venturi tube having a gas inlet and a primary air inlet atV one end whereby said combustible mixture is formed inside said tube, said Venturi tube at the opposite end thereof connected with said iianged central openings to convey a combustible mixture to the spaces between each pair of plates, a secondary air tube surrounding and spaced from said Venturi tube and coaxial therewith and having means for supporting the primary air inlet end of said Venturi tube at one end of said secondary air tube, said secondary air tube terminating at its other end adjacent said additional flanged openings and in secondary air series ow relationship with Asaid additional flanged openings, a mounting ilange between said ends of said secondary air tube and having a radially outerportion adapted to be atxed to said combustion chamber and a radially inner portion in the'form of a anged ring circumferentially bonded to said secondary air tube, said radially outer portion having a series of evenly distributed small air flow apertures arranged circumferentially in a vertical plane and extending axially parallel to and located radially outwardly of the secondary air tube to prevent noise in the operation of said burner.

References Cited in the file of this patent UNITED STATES PATENTS 739,667 Gillett Sept. 22, 1903 2,275,555 Power Mar. l0, 1942 2,840,151 Jackson June 24, 1958 

